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All results from a given calculation for H2OH2CO (water formaldehyde dimer)

using model chemistry: B3LYP_cp/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3LYP_cp/3-21G
 hartrees
Energy at 0K-189.839638
Energy at 298.15K-189.833588
Nuclear repulsion energy 
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3LYP/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3527 3403 24.45      
2 A 3355 3238 114.02      
3 A 3077 2969 27.96      
4 A 2962 2858 81.69      
5 A 1722 1661 41.41      
6 A 1691 1632 40.06      
7 A 1536 1482 31.16      
8 A 1268 1223 2.21      
9 A 1250 1206 8.56      
10 A 762 735 348.49      
11 A 424 410 42.75      
12 A 351 339 90.04      
13 A 276 267 144.48      
14 A 256 247 24.94      
15 A 247 238 19.63      

Unscaled Zero Point Vibrational Energy (zpe) 11351.5 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 10953.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3LYP/3-21G
ABC
1.14936 0.19746 0.17140

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.947 -0.577 -0.141
O2 1.693 0.091 -0.101
O3 -0.935 -0.694 0.009
H4 2.042 0.022 0.829
C5 -1.113 0.531 0.007
H6 -0.256 1.212 -0.033
H7 -2.120 0.974 0.042

Atom - Atom Distances (Å)
  H1 O2 O3 H4 C5 H6 H7
H11.00231.89161.58032.34432.15883.4423
O21.00232.74480.99552.84252.24893.9166
O31.89162.74483.16971.23792.02382.0466
H41.58030.99553.16973.30022.72754.3418
C52.34432.84251.23793.30021.09581.1007
H62.15882.24892.02382.72751.09581.8812
H73.44233.91662.04664.34181.10071.8812

picture of water formaldehyde dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.338      
2 O -0.666      
3 O -0.397      
4 H 0.315      
5 C 0.034      
6 H 0.202      
7 H 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.251 0.989 1.596 2.256
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 67.345
(<r2>)1/2 8.206